I just reopened my document in ID and I have added an image sequence.
Nothing to do, with none selected in both saved ducuments (landscape and portrait) i can't see preview selecting it from both panel (folio builder and overlay creator).
When i select preview from overlay creator panel the message i get is:
"Impossibile accedere alla directory di output. La directory non è scrivibile e non è quindi possibile salvare il folio."
"Unable to access the output directory. The directory is not writable and is therefore not possible to save the folio."
Really i don't know what to do !!!
I've removed folio producer tool and ID from MAC.
Then I reinstalled ID and this version of folio prodecer tools, FolioProducerTools-CS55-1-9-1.dmg, like requested from folio panel.
Now in the Folio Builder panel I've again the request to download the Folio producer tools update (see the image below).